Knob spindle securing means



Aug. 29, 1950 c. P. wlcKs 2,520,669

KNOB SPINDLE SECURING MEANS Filed June 2, 1947 INVENTOR I C. I? w/cAJ.

ATTORNEY Patented Aug. 29, 1950 UNITED STATES PATENT TQFFICE v KNOB SPINDLE SECURING MEANS Clifford PpWicks, Stamford, Conn., assignor to The Yale & Towne Manufacturing Company, Stamford, (lend, a corporation of Connecticut l lpplication June 2,1947, Serial No. 751,689

knob, with theparts so arranged that the'knob' and spindle cannot be moved away from assembled relation to the lock. In this way, the several parts are held in operating relationship. It is the object of my inventionto contribute means whereby a spindle may be readily assembled to a look without the utilization of special tools or removable fastening elements.

As a feature of the invention, I utilize a spindle that is readily assembled to a lock part, preferably the rollback, so as to rotate the rollback while simultaneously effecting a locking of the spindle against endwise axial removal from the rollback. It is a particular feature of this part of the invention that the assembly of the rollback and spindle requires no tools or movable fastening means.

As still a further feature of the invention, the spindle is formed of a plurality of longitudinally extending parts whereby it is adapted for rigid assembly to a knob, the spindle parts being secured to one another at one end for efiecting assembly simultaneously to a rollback.

I have thus outlined rather broadl the more important features of my invention in order that the detailed description thereof that follows may be better understood, and in order that my contribution to the art may be better appreciated. There are, of course, additional features of my invention that will be described hereinafter and which will form the subject of the claims appended hereto. Those skilled in the art will appreciate that the conception on which my disclosure is based may readily be utilized as a, basis for the designing of other structures for carrying out the several purposes of my invention.

Referring now to the drawings, Fig. 1 is a vertical section through a rollback, spindle and knob constructed in accordance with the teachings of my invention. Fig. 2 is a section taken along lines 2-2 of Fig. 1. Fig. 3 is a partial section in elevation taken along lines 3-3 of Fig. 1. Fig. 4 is an exploded view of the knob, spindle and rollback of my invention.

Referring now more particularly to the drawings, reference numeral indicates a rollback of the type adapted for rotation by a spindle and equipped with a, cam portion H for retracting a bolt or the like as those skilled in the art will understand. The rollback It is formed with a bore 3 Claims. (01. 292-4365) 0 having a square axial elevation adapted for coaction with a square spindle. This bore 0 is defined by upper and lower surfaces designated respectively by reference numerals l2 and I3 in Fig. 1, and by side surfaces I4 and I5. Each end of the rollback bore 0 is enlarged as shown at- 5 and in Fig. 1. Similarly the internal portion of the bore 6 is enlarged as best shown at 18 in Fig. 1.

Adapted for insertion intothe bore 0' of the rollback i0 is what is knownin the art as a triplex spindle S'formed of three parts I9, 20 and part of the-pin obstructing bore 0 of the'rollback'b A knob K is formed with a square opening 22 into which extends a threaded stud 2d of the type well known in the art. The left end of the spindle S is inserted into the opening 22 as shown in Fig. 1 and thereafter the threaded stud 24 is rotated to bring pressure against one of the three spindle parts, here the part 20. This pressure by stud 24 spreads the spindle parts against the surfaces of the opening 22 of the knob K and securely secures the knob to the spindle, all as those skilled in the art will appreciate.

When it is desired to assemble to a door a lock equipped with the rollback Ill, the lock is first placed in the door in position to accept spindle S through the usual side openings. Spindle S is then moved into alignment with its dash and dotted line position of Fig. 1 and then downwardly to bring the slot 25 under the cross pin 26. It will be possible thereafter to move the spindle S to its operating position shown in full lines in Fig. l; 7

With the spindle in the full line position of Fig. 1, it is obvious that it is retained against axial movement relatively to the rollback I0. Thereafter, the knob K may be applied to the left end of the spindle as already set forth. So long as the knob and spindle are in the particular relationship of Fig. 1 to the rollback, and this will be the relationship of the parts when they are assembled in a lock and door and there held by roses or the like, the spindle will be retained against removal from the lock and the knob will be held on the spindle.

It is now obvious that by the utilization of extremely simple means I make it possible to secure my spindle to a rollback, While utilizing the preferred triplex spindle construction well known in the art. It is obvious further that my invention makes it unnecessary to use assembly tools or fastening means of any sort, as it is merely by a manipulation of the parts that the spindle is fastened to the rollback. It' is obvious further that h pi dle be xe lir m h ll-r back at t m by mer o es, it e elalr szback to its position in dash and dotted lines shown in Fig. 1 and then outwardly.

Inow claim:

1. In a combination of the class described; a rotating rollback cam having. an axial square bore, a square spindle adagt dftgfrt said bore so that rotation of said! spindle efiects rotation of said rollback, said. borev being en;

larged at one side of the rollback and above the central longitudinal axis of said DOLE, said bore being also enlarged centrally of said rollbae aeclbs w s id xisf r the. iee itiee the spindle, into s, bare it a direction an against axial moveme ha n rell aq s am ha Star et;v indle. adapted o it e s et iq is sa d eieqle e c s. r t

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' rollback surface as said spindle enters said axial bore of said rollback at said enlarged side and moves into axial alignment therewith, whereby said spindle is locked thereafter against axial movement out of said rollback bore.

3. a goInbination of the. class described, a etat z a roll a k cam bailin s. Square bore, a square spindle adapted to fit in said bore so that rotation of said spindle effects rotation of said rollback, said bore being enlarged at one side of-the rollback and at one side of the central longitudinalaxis o t: said bore, said bore being also enlarged; centrally of said rollback and at the qthenside said axis for the insertion of the spindle, into said bore in a direction at an angle 'to the axis'of rotation of said rollback cam,

a on said rollback obstructing said axial bore, and a surface formed on said spindle adaptthi r er a nst moimenwii or s le.

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